Kollam Era (also known as Malayalam Era or Kollavarsham or Malayalam Calendar or Malabar Era) is a solar and sidereal Hindu calendar used in Kerala, India. The origin of the calendar has been dated as 825 CE (Pothu Varsham) at Kollam(Quilon). It replaced the traditional Hindu calendar used widely else where in India and is now prominently used in Kerala. All temple events, festivals and agricultural events in the state are decided according to the dates in the Malayalam calendar.